12V 24V 220V Plastic Solenoid Valve G1/2 DN15 Normally Closed Normally Open Inlet Drain Valves Pressure Control Switch

12V NO P Closed means DC12V NO Pressure Normally Closed

12V  P Closed means DC12V Pressure Normally Closed

12V  P Open means DC12V Pressure Normally Open

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General problem
1. What is a pressure valve (inlet valve), what is a pressureless valve (discharge valve)?
A pressure valve is also called a water inlet valve, and a pressureless valve is also called a water pressure valve. Pressure is water pressure, no pressure is no water pressure, pressure valve is suitable for 0.02~0.8Mpa water pressure, no pressure valve is suitable for 0~0.2pa water pressure, Not used within normal pressure range, solenoid valve will not normal work! In general, there is a pressure valve for draining tap water, water tank water towers and similar functional containers use pressureless valve. Because we can't specifically understand the customer's use environment, we only provide reference standards, which require customers to choose according to their actual situation. In particular, the AC220V pressureless valve will have jitter and noise, and the diaphragm type solenoid valve all have this problem with the AC presssure type, which cannot be solved temporarily.
2. How to achieve automatic control?
The product is very simple, it is connected to when it is energized, and it is disconnected when the power is off. It can be used to implement different functions through connect the controller such as temperature controller, time controller, light controller and liquid level.
3. What is normally open and normally closed?
The solenoid valve is energized and watered, and the power is cut off. This is a normally closed type, which is more commonly used;
The solenoid valve is energized and cut off, and the power is turned off. This is a normally open type, which is less used. Please purchase according to actual needs;
4. Is the coil hot?
The solenoid valve is a pure copper coil. It is normal for long-term operation to heat up.  the system can be continuously energized for a long time in an environment where the ambient temperature is lower than 30 degrees. The environment is higher than 30 degrees. It is recommended to rest at least 10 minutes after continuous operation for four hours.
5. Is the solenoid valve equipped with other accessories?
The solenoid valve is a separate valve. If you need a protective cover, please take a protective cover and put it into the shopping cart to purchase it.

Description:

Interface specification: thread G1/2 DN15
Filtration function: pressure type with / without pressure type with no
Body material: PBT